Supporting apparatus for impact-tools



PATENTED IEB. '2, 1904;

E. GUNNELL. SUPPORTING APPARATUS FOR IMPACT TOOLS.

APPLICATION FILED APR. 23, 1902.

N0 MODEL.

cmms PEYERS co. Mo-ro'umo. wAsnmsrau D c E. GUNN SUPPORTING APPARATUSIMPACT TOOLS.

PATENTED' FEB. 2, 1904.

Patented February 2, 1904.

UNITED STATES PATENT OFFICE.

ELIAS GUNNELL, OF CHICAGO, ILLINOIS SUPPORTING APPARATUS FORIMPACT-TOOLS.

SPECIFICATION forming part of Letters Patent No. 750,967, dated February2, 1904.

\ Application filed April 23, 1902- Serial No. 104,735. (No model.)

To all whom it ntay concern:

Be it known that I, ELIAS GUNN'ELL, a citizen of the United States ofAmerica, residing at Chicago, county of Cook, and State of Illinois,have invented certain new and useful Improvements in SupportingApparatus for Impact-Tools, of which the following, taken in connectionwith the accompanying drawings, is a specification.

This invention has reference to the provision of apparatus intended foruse in carrying, supporting, and guiding impact tools, such as pneumatichammers or riveters when in use on a flat or horizontal surface, as forexample on the deck of a boat, or in other like work.

The first of the objects of the present invention is the provision of adevice of the character specified, which will be cheap to construct, andyet capable of easy operation, and which will permit, by improved andnovel means, of universal movement of the impact tool, such universalmovement being procured through pivotal support upon one member of thesupporting apparatus, and hinge support or other equivalent connectionfor another member of the apparatus.

A further object of my invention is the provision of a device of thecharacter specified, by the use of which it will be possible, inriveting the tops of rivets in deck plates, to round them over, insteadof making them perfectly flat, as is the common practice in this classof riveting, thus enabling me to make a much stronger job than ispossible where the rivets are merely flatted, or made flush with thesurface of the deck. In connection with this improvement I have providedmechanism which renders it possible, with facility, to hold the tool inapproximately upright position, and give it then a substantiallyuniversal movement, holding the die meanwhile at approximately one pointon the end of the rivet, the supporting apparatus accommodating itselfreadily to the movement of the tool.

The above, as well as such other objects as may hereinafter appear, Iattain by means of a construction which I have illustrated in preferredform in the accompanying drawings, in which I Figure 1 is a plan View ofan improved ap: paratus of the character specified,

Figure 2 is a side elevation thereof,

Figure 3 is an end view,

Figure L is a sectional View taken on the line i of Figure 5,

Figure 5 is a sectional view taken on the line 5 of Figure 3, and

Figure 6 is a View showing a rivet being operated upon by a rivet set,the-set being carried in an apparatus supported by my improved device.

Referring now more particularly to Figures 1 and 2, it will be seen thatin carrying out my invention I provide first a carriage 7, provided witha pair of wheels 8, adapted to rest upon the deck plate 9, the carriagehaving a rod or extension part 10 rotatably mounted within thecarriage,but limited in the extent of its rotative movement by means ofa projecting finger piece 11 (see Figuresand 5), which is arranged toabut, at the limits of its movement, against stops 12 secured to thecarriage, determining the extent of movement of the rotation of the rod10. The finger piece 11 is secured firmly to the rod 10 by means of theset screw 13, and each side of the finger piece 7 there is a sleeve 14,and 15 tending to act against the upwardly extending bracket 16 toprevent longitudinal movement of the rod or bar 10 within the carriage,after the set screw 13 is tightened.

The free end of the bar 10 is provided with a pivot pin 17, whichcarries a clamp 18, that surrounds the tool 19, the pivot pin 17permitting a movement of the tool in one direction about the pivot pinas a center, to the extent that will be permitted by the stops 20,

which are provided to maintain an approximately upright position of thetool, or more properly, to limit the amount of hinge like movement aboutthe pivot pin 17. The bar 10 is provided, preferably, with a pluralityof weights, as 21 and 22, held upon the bar by means of set screws 23and 24:, the use of a plurality of the weights being preferred becauseit is more easy to change to suit the requirements of the work. Thus forexample, if a very heavyhammer is used, there is more recoil than Wherea light one is used, and in that case both of the weights 21 and 22 aremoved out to the position shown in the drawings, adjacent to the hammer,whereas if a light hammer is used, and the recoil is less, one of theweights is then slid along the bar back to a position adjacent to thecarriage, where it will not exert so much force in absorbing recoil, butwhere it will also be easier to manipulate. The hammer 19 is shown asacting against a set 25, which operates upon the top of the rivet 26(see Figure 6) in the manner shown, so as to round it over, as incatedat 27, the universal movement or substantially universal movement of theset and tool being permitted by the combination of the pivot connection17 about which there is the hinge movement, and the rotative movement ofthe rod 10 within the carriage, as already described. The slightlongitudinal movement of the upper portion of the hammer resultant uponholding the set at substantially one point on top of the rivet head iscompensated for by movement of the carriage itself on its rollers 8.

I have only illustrated the hammer diagrammatically, since it is obviousthat any type of fluid pressure or other impact tool could be used, asdesired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. An impact tool holder comprising amovable carriage, a carrier armmounted at one end on the carriage and at its free end provided with atool holding head mounted with universal angular movement on said arm,and stops to limit the angular motion in all directions.

2. An apparatus for holding impact tools, comprising a carriage, wheelssupporting said carriage, a bar secured at one end on said carriage, andat the other end provided with means for supporting the impacttool,'said bar having rotative movement within said carriage,substantially as described.

3. An apparatus for holding impact tools, comprising a carriage, wheelssupporting said carriage, a bar secured at one end on said carriage, andat the other end provided with means for supporting the impact tool,said bar having rotative movement within said carriage, and stopmechanism for limiting the rotative movement of said bar, substantiallyas described.

i. An apparatusfor holding impact tools, comprising a carriage, Wheelssupporting said carriage, a bar secured at one end on said carriage, andat the other end provided with means for supporting the impact tool,said bar having rotative movement within said carriage, the said meansfor supporting the hammer comprising a hinged or pivotally connecteddevice carried on the end of the bar, substantially as described.

5. An apparatus for holding impact tools, comprising a carriage, wheelssupporting said carriage, a bar secured at one end on said carriage, andat the other end provided with means for supporting the impact tool,said bar having rotative movement within said carriage, the said meansfor supporting the hammer comprising a hinged or pivotally connecteddevice carried on the end of the bar, and projecting stops on the freeend of the bar to limit the hinged movement of the hammer supportingdevice, substantially as described.

6. An apparatus for holding impact tools, comprising a carriage, wheelssupporting said carriage, a bar secured at one end on said carriage, andat the other end provided with means for supporting the impact tool, andrecoil absorbing Weights carried by said bar, substantially asdescribed.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

ELIAS GUNNELL. In presence of PAUL CARPENTER, PHILIP J. FINNEGAN.

